Caught on camera: Peeping through the window, is this the image that proves aliens DO exist?

Are we alone? A question which endlessly fascinates people around the world.But while most might dismiss aliens as being as fictional as the sci-fi television programme the X-Files, one man in Denver is hoping to prove with a three-minute video - and this image below - that they are out there. A grainy, black and white video showing a shadowy creature peeping over a windowsill was released this morning at Tivoli Student Union Auraria campus in Denver.

Denver resident Jeff Peckham organised the screening of Stan Tiger Romanek's clip to re-spark the debate on alien life, saying "we believe this will be somewhat of a historic news conference".Some have already denounced the footage of a white creature with a balloon-shaped head popping up and down at a windowsill eight feet above ground as a fake.But Alejandro Rojas, education director of Mutual UFO Network, who spoke out the conference, is adamant the creature with the white face and large black eyes is real.He said: "If it was a puppet, it would be a very elaborate and sophisticated puppet. I don't believe they have the ability or the motivation to fabricate a hoax."Rojas explained Romanek had claimed to have had more than 100 encounters with aliens, including being abducted by extraterrestrials who inflicted red marks on his back and arms.He apparently took the video on July 17 2003 in Nebraska after setting up a camera because he though people were looking into his house at his two teenage daughters.